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Low-Energy Excitations in (KBr)1−x(KCN)x in the Orientational Glass State

  • M. Meissner
  • J. J. de Yoreo
  • R. O. Pohl
  • S. Susman
Conference paper
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 51)

Abstract

CN ions substituting in small concentrations for Br ions in KBr are known to possess low energy, quasirotational tunneling and librational states. For molar concentrations x>0.01, (KBr)1−x(KCN)x is believed to enter into a quadrupolar glass phase at low temperature [1,2]. We have measured the low-temperature thermal conductivity and specific heat of this mixed crystal system for x=0.25 and 0.5, and have found it to possess the same low-energy excitations as are seen in amorphous solids.

Keywords

Thermal Conductivity Phonon Scattering Amorphous Solid Tunneling State Measured Specific Heat 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1984

Authors and Affiliations

  • M. Meissner
    • 1
  • J. J. de Yoreo
    • 1
  • R. O. Pohl
    • 1
  • S. Susman
    • 2
  1. 1.Cornell UniversityIthacaUSA
  2. 2.Argonne National LaboratoryArgonneUSA

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